147475681 has 4 divisors (see below), whose sum is σ = 150905392. Its totient is φ = 144045972.

The previous prime is 147475661. The next prime is 147475703. The reversal of 147475681 is 186574741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 147475681 - 2⁷ = 147475553 is a prime.

It is a super-2 number, since 2×147475681² = 43498152972827522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 3429667 = 147475681 / (1 + 4 + 7 + 4 + 7 + 5 + 6 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147475651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1714791 + ... + 1714876.

It is an arithmetic number, because the mean of its divisors is an integer number (37726348).

Almost surely, 2^147475681 is an apocalyptic number.

It is an amenable number.

147475681 is a deficient number, since it is larger than the sum of its proper divisors (3429711).

147475681 is an equidigital number, since it uses as much as digits as its factorization.

147475681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429710.

The product of its digits is 188160, while the sum is 43.

The square root of 147475681 is about 12143.9565628340. The cubic root of 147475681 is about 528.3318632734.

The spelling of 147475681 in words is "one hundred forty-seven million, four hundred seventy-five thousand, six hundred eighty-one".